Thanks
@John A. for your experience here.
I appreciate yall bearing with me as I learn, I'm fascinated, earnestly, with the plethora of choke information. None of it is definitive, it's an ongoing experiment all over the webz.
I received a reply from Colonial, I intend to speak with someone tomorrow. In my searching I can't find anything negative but neither can I find pics or videos and little more than the occasional "you won't be disappointed" on forums. I can't find any serious reviews or patterning.
Here's what I'm gathering on the two types of choke tubes I'm interested in;
Turkey choke exit diameter for the 835 should be between a .690 on the high end (Carlsons has one as open as .705) and as tight as .670 and it would seem that diameter is optimized with #5 or #6 shot in a 3" load. George Trulock said speed kills. It also kills patterns. He is fond of the Winchester loads as is Kicks. The Winchester "high speed" loads has a velocity of only 1300 fps max which I'm certain lends to the sort of patterns some of these folks have experienced and been excited for.
I've only used the Hornady #4 shot thus far at 1600 fps through the ported tube at a diameter of .695. My patterns haven't been impressive and I'm learning why.
Tomorrow, I'm going to obtain full patterns from both 20" guns with the load I have and put up some pics. As I'm able, ill get some more ammo and do some more. Maybe by the fall season we'll have it all worked out!
A brief mention on the other choke I want, a predator/coyote tube.
The suggested tube would be a full to an extra full with an exit diameter around .720 suitable for use with 000 to #4 buck. Plated shot or heavier than lead is preferred with many hunters liking hevi-shot and pellet size in the range of #4 to bb. I did see some patterning with hevi-shot out to 70 yards. Not impressed. While the guy is like "yeah, that's a kill" I'm thinking, only if you can predict where those two pellets you can find are going to go.